add ruby and python targets to travis tests
speed up php test code
add helper functions to CompareFlags to avoid dealing with native lists
1.1.19
document some classes
document CompareFlags
prune some unused classes
document Alignment class
api documentation and cleanup
avoid [] php syntax
document another bundle of classes
finish documenting core classes
mention api documentation, tweak readme
add small example diff
add sample git diff to readme
deal with complete table deletion (including header row)
1.2.1
tweaks to avoid using hard-to-backport python3 nonlocal translation
freshen python example
add python support back to python2.6